Articulated car-truck.



- III/mig @SPY c. H. HOWARD I H. IvI. PFLAGER.

ARTICULATED CAR TRUCK.

APPLICATION FILED IULY 25,1914.

Patented June 22 miran srarns Parana onirica,

CLARENCE H. HOWARD AND HARRY M. PFLAGER, OF ST. LOUIS, MISSOURI, ASSIGNORS, BY MESNE ASSIGNMENTS, TO COMMONWEALTH STEEL COMPANY, A CORPORATON 0F NEW JERSEY.

ARTICULATED CAR-TRUCK.

Specification of Letters Patent.

Patented J une 22, 1915.

Application led July 25,1914. Serial No. 852,977.

, of which the following is av full, clear, and

exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had vto the accompanying drawings, Jforming part of this specification, in which Figure 1 is a plan view of a truck frame of our improved construction. Fig. 2 is a side elevational View of the truck with parts broken away and in vertical section. Fig. 3 is an enlarged detailed view taken looking in the direction indicated by the arrow 3 1n Fig.k 1.

Our invention relates generally to railway car trucks and more particularly to a six wheel truck of the articulated type, the principal object of our invention being to provide a truck wherein the truck frame is formed in two parts and the center bolster in one part, said parts being combined with each other and with the journal boxes on the axles of the truck so that loads impressed on the truck will be equally divided between the three axles thereof.

Further objects of our invention are to generally improve' upon and simplify the present forms of trucks of the type to which our invention relates, and further to provide a comparatively simple, strong and durable artcu ated truck which can be easily and cheaplymanufactured and readily assembled or taken apart, which latter provision greatly facilitates repairs when the same are necessary. i

With the foregoing and other objects in view, our invention consists in certain novel features ,of construction and arrangement of parts, hereinafter more fully described and claimed. ftRieferring by numerals te the accompanying drawings, Ait) Vdesignates the axles having their ends mounted in the usualA journal boxes 11, and positioned upon said axles are the usual wheels 12.

The fra-me of our improved truck is made in two parts which are duplicates and of substantially H-shape when viewed in plan. Each part comprises a transom 13 with the ends of which are formed integral side or wheel pieces 14.

As shown in the drawings, the transoms 13 are substantially tubular or hollow and the wheel pieces substantially` of I-beam shape in cross section, although these parts may vary in cross sectional shape as desired.

ll7hen properly assembled,' the transoms 13 occupy positions between the truck wheels with the inner ends of the wheel pieces 14 resting upon the journal boxes on the center axle and with the outer ends of said wheel pieces resting upon the journal boxes on the outer axles. T hus, each part of the frame has four points of support, namely, two on the outer aXle and two upon the inner or center axle. I Formed integral with or ixed to the inner portions of the wheel pieces are depending brackets 15 which normally bear against the sides of the journal boxes on the center axle, and formed" integral with the outer portions of said wheel pieces are depending brackets 16 which engage the side faces of the journal boxes on the 'outer axle.

The center bolster of our improved truck ispreferably cast in one piece, is substantially of H-s'hapewhen viewed in plan and comprises a transversely disposed center member 17 and a pair of longitudinally disposed side members 18.

Formed integral with the endsof the center member 17 are outwardly Vand up wardly projecting brackets which serve as side bearings 19 and formedv integral with or fixed to the top of said center member and at the center thereof is a center bearino. v

l' e ends of the side members 1S overlie ,and extend slightly beyond the transox'ns; 13

andormed in the undersides of the end-s of said side members-are sprlng seats 21.

, Formed integral with or fixed tothe tran- 'soms 13y and projecting v outwardly therefrom are spring seats .22l and arranged therein-are springs 23, the upper ends of which `are positioned in the springseats 21.1 'Formed integral with the ends of the side members 18Hand justin'side the spring seats 2l are depending brackets or bearing plates 24:, the same engaging the side faces of the vtransoms and servlng as guidesy for Y any the truck frame.

vides the requisite lexibilit l'to the outer I [tothe yinner axle, thus equally dividlng. the' loadbetween all three axles;

vertical movement of the center bolster with respect to thevparts ofthe truck frame or vice versa. l By oury improved constructionA each part of the. truck frame has' four points of sup- Aport upon the axles forming' apart of the4 truck Aand the centerfybolster' is yieldingly Isupported 'at foul-points .upon the parts of Such construction proand'- at the same. time insures an even i 'stribution oi thejloaduponall three-axles l drawn through the centers' ofthe springseats atene end of thetruck to thefcenter 1 ofthe adjacent outer.- axle is justfh'alf .the

distance from thevcenter line ofthe springv The .distance from a' vtransverse line rseats to the center ofv the center axle,and

thustivo-thirds of the load carried by each V' half of ythel truck frame will be transmitted axle an'd one-third of the loadl 'A truck of our improved'const'r'uction is vcomparatively slmple,

y cheaply .manufactured, has the necessary herein shown and parting from the 'spirit of our invention, the.

. scope of which is set forth .in the appended claims.

We claim:

1.1`In a car truck', a series ofwheelcarrying axles,

a truck frame. composed yof twoseparately formed and independently lmovable parts,

thereto, each part having four points ofl supj pOrt upon the axles, and a center-bolster epppr-tedby; the truckframe, the'points of ihppontiaforlsaid ,center bolster belng lo- 6.9-

'cgtgdso that the supported load is transmittedi'b nddvided equally between the axles. A

2.. In a car truck, a series of wheel carryable parts, e'ach part comprising a transomV Vloads impressed on the bolster are transmitted to'and divided equally betvveenfthe .separately formed and indep support for said centerl bolster-being located can-l be easily and -ing axles,

' separately formed andindep described, without de-y eachl part comprising a transom` and a pair of wheel pieces I igidlyixeda truck frame composed. of twoseparately. formed and lndependently movv l, ported by sald axles` the nartsofwhich ,13d

anda pair 'of wheel piecesirigidly fixed thereto, which parts are supported by said axles, and a vcenter bolster supported-by said truckframe, the points of sup ort'for said lcenter bolster being located so 4 hat the axles. v A l 3. Ina car truck, a series lof Wheelcay-vv ing axles, a truck frame composed fof:y two' separately Aformed and independently, 'movable parts, each partcomprising'a1-transom and a pair lof wheel pieces rigidly fixed thereto, each part hav-ingv -four, points of support upon the axles, and a centerbolster' yieldingly supported upon the. partsfofthje truck frame. y 1

4. In'a car truck,' a. series -o'f `Wheel AcaI'ry-j ing axles, a truck frame 'composed l.of tijeen'de'ntly A able parts, each part comprising atransolr'i.

and apar. of wha-,ipiecesjgidiy .exea

thereto, each :part having'lgfourl pointsfof support upon the' axles, anda center bolster yieldingly supported at four pointson. the partsof thev truck frame. ,I

5. In acar truck, a series of wheelcarry ing axles, a truck frame composed'of` tvvo separately formed and independentlyv 'movi able parts, eachpart compmsing a transom. und a pair of. Wheel '-piecesjrigidlyljixed thereto, .ea'ch part"havingffonr'points'l Y support upon the' axles, a' center bolster sup-'- ported by the truck fra-me, the-points of,y v l 'Y so that the supported load is tran"smittedv to and divided equally between theajxlesf and a center bearingon'said center bolster.

6. In a car truck, a series of wheel-Vean A a truck frame composed-:of'tvt er'ileiitlyn y able parts, each part f'com'prising 'a transom and a pairl of'w'heel pieces rigidly" fixed' thereto, each part having .four Apointsgjf -l support upon the axles, a center bo ported by the truck frame, the p'ointlsfof suppxort .for said center bolster being'loc'ated so t at the supported -loadvisf transmitted ytfo andA divided equally'betweenthe axles,. `l andi side Ibearings von said z(Senter bolster,v 115] 7. In a car truck,v a series' of Wheel ear.- rying axles, an articulated truck framev supported by said axles, the parts Ofwhich truck frame are provided with .transoms which occupy positions midway between-the 1g wheels ofthe truck, anda center-bolster su v ported by.A said truck hframe, thepointsf'of support for said center bolster being located to the outersidesof the tr ansoxns' s'o tha loads impressed on 'saidbolster "l Y mitted to and equally divided between the axlesk ofthe truck. 1 j

' 8. In a car truck, a series of wh ing axles, an articulated truck fram Ster il J re transf t truck frame are provided with transoms which occupy positions midway between the wheels of the truck, and a vcenter bolster yieldingly supported on the truck trame, the points ot support for said center bolster being located to theouter sides of the transorns so that loads impressed on said bolster are transmitted to and divided equally between the axles.

9. In a ear truck, a truck frame formed in two independently movable parts, each coinprising a transom, and, a pair of .wheel pieces rigidly fixed thereto, the ends of which wheel pieces are supported by the axles, and av Center bolster supported by the transoms of the parts of the truck frame.

10. In a ear truck, a truck frame formed in two independently movable parts, each comprising a transom and a pair of wheel pieces rigidly fixed thereto, the ends of which wheel pieces are supported by the axles, and a center bolster yieldingly supported upon the transoms of the truck frame.

11. In a car truck, a truck frame formed in two parts, each comprising a transom and a pair Vof wheel pieces, journal box engaging elements on the end portions of the wheel pieces, and spring supports on thetransoms.

12. In i ear truck, a truck frame Comprising ay pair ot' substantially H-shaped inembe gf, a substantially H-shaped center bolster snpported` by the H-sliaped 'members ot' the truck frame, and side bearings on said center bolster.

13. In a car truck, the Combination with a i two-part truel'c frame, each part having a.'

transom; of a substantially H-sliaped Center bolster, the ends of the side members ot which overlie the transoms and are yieldingly supported by said transoins at points outside the body portions thereot. Y

14. In a cai' truck, a truck 'frame formed in two parts, each eon'iprising a transom, and a pair of wheel pieces. a center bolster, p arts of which overlie and extend beyond the transoinsgit the truck traine, spring supports projecting outwardly from the transonis and springs interposed between the spring supports and the overlying parts ot the center bolste'i?l 15. In a ear truck, a truck trame formed in two parts, each romprising a transom and a pair ot' wheel pieces, a center bolster, parts of which oveilie the transonis ol" the truck frame, springs interposed between the transoms and the overlying parts of the center bolster, and means tor guiding the vertical movement ot' the center bolster with respect to the truck trame.

16. In a car truck, a truck frame formed in two parts each i-.oiiiprising a transom and -a pair ot wheel pieees, a center bolster, parts of which overlie andA extend beyond the transonis otl the parts of the truck frame,

and spring carrying members projecting outwardly from t ti'ansoms of the truck frame, which spring carrying members Constitute supports for the overlying portions of the center bolster, and being located so that loads impressed on they center bolster are transmitted to and equally dividedbetween the axles associated with said truck 18. In acar truck, a truck frame formed in two parts each comprising a transom and a pair ot wheel pieces formed integral therewith, the end portions of said wheel pieces being adapted to engage journal boxes, and

each part being independently movable With respect to the other.

19. In a Car truck, a truck frame formed in two parts each comprising a transom and a pair of wheel piecesformed integral therewith, the end portions of said wheel pieces being adapted to engage journal boxes, each part being independently movable with re-v spect to the other, and a center bolster Supported by said frame members.A

Q0. In a ear truck, a truck frame formed in two parts each comprising an integrally toi-ined transom and a pair of wheel pieces, each part being indimendently movable with respeetto the other, a center bolster supported by said trame members, and side bearings on said renter bolster.

21. In a car truck, a truck frame formed in two parts each comprising an integrally torined transom and a pair of wheel pieces, each part Abeing independently movable with respect to thel other, a center bolster, and supports on the transoins otl the traine niembers t'or said (tenter bolster, which supports are located so that loads impressed on said bolster are transmitted to and divided equally between the axles associated with the truck trame.

22. In a ear truck, a series of wheel carrying axles, a truck 't'ranie Jformed in two parts each comprising an integrally formed ti'aiisoin and a pair ot' wheel pieces, eiieh part being independently movable with respectto the other, a center bolster, and supports onv the transoins ot the parts of the truck frame, which supports-are located so that loads 4impressed on .said bolster are transmittedA to and divided equally between the axles.

In a oar tri1ck,a series ot' wheel Carrying axles, a truck traine formed in two parts each comprising an integrally formed ti'ansoin and a pair ot wheel pieces, each part being independently movable with respect t0 -tlie otheli, a' center bolster, suppoits on t-he-v olif signatures inthe v resence 'of two witvtrensom's of the parts of thetruck frame, nesses, this 18th da o Jul ,1914, v

which suppoiitsa're' located so that loads im- GLAR NGE HOWARD;4

-pressed on saiglvbolster, are vtransfiitted to HARRY'M. PFLAGER. 5 and divided eqallybetween the axles, and Witnesses: v

Vside 'bearings on said center bolster. v HAL C. BELLYILLE,

f In testimony wher-'eef we Vhereunto alli):4 OTTO V, MYERS'. 

